No backlight after liquid (Switch Lite)

trixter

trixter

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Frankfurt
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Console with liquid damage, cleaned corrosion spots. It turns on but backlight won't work. Can't see image even with flashing on screen. Touch works. Backlight IC doesn't generate 17v, only 3.8v. I think there is no connection between main and daughter boards. But cable is ok, checked every pin for connection. Backlight port diode measurements different from normal, 3rd pin shows 1.7 instead of 0.245 other ones is 0. FPC 2 diode measurements is ok. Any suggestions?
 

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